both relays works from the interface.
but only sw1 update the GUI after a manual change.( sw2 don't update the GUI).
in the device manual I found the reason :

"For Wall SW1, ZL 7432 will report the status of On/OFF after doing “Association”.
However, Wall SW2 will only report the status if Z-Wave™ Interface Controller
support Multi Channel command, and send Get Command to ask ZL 7432 Wall SW
2 to report the status."